JPH08118293A - Sheet punching-out machine - Google Patents

Abstract

PURPOSE: To set the standard line in the sheet feed after the repair through the grinding for the deterioration due to the abrasion of the punching cut surface of the die of a punching-out metal mold, and the die surface after grinding, to the equal level, as for a sheet punching-out machine for manufacturing a plurality of small cards by punching out the printed parts of a plurality of small cards each of which has the regularly printed parts on the sheet. CONSTITUTION: A sheet punching-out machine consists of a sheet punching-out metal mold A having a die 1 and a punch 2 and a sheet feeding device B for feeding a sheet into the punching-out metal mold A. The sheet feeding device B has a sheet feeding part B1 which can be raised and lowered. The sheet feeding standard line L of the sheet feeding part B1 can be height-adjusted so as to be on the equal level for the surface of the die 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-fed sheet punching machine for punching a plurality of small card printing portions regularly printed on a sheet to produce a plurality of small cards. The present invention relates to a sheet-fed sheet punch manufacturing machine capable of making the reference line of sheet feed after grinding and repairing deterioration due to wear of the die-cutting surface of the die and the die surface after grinding flush with each other.

[0002]

2. Description of the Related Art Conventionally, a sheet of sheets (sometimes referred to as a raw sheet) is sent by a punching die to punch an appropriate place to manufacture a plurality of small cards such as telephone cards and credit cards. Although there is a punching manufacturing machine for punching, as shown in FIG. 15 (a), a sheet is fed into a die for punching, and a plurality of small cards are punched from the sheet by a punch and a die. It is manufactured. As the punching work time elapses, FIG.
As shown in (b), the die-cutting surface of the die for punching has a worn portion m, which deteriorates the punching-cutting ability, and the cutting surface finish of the small card from the sheet is gradually increased in the punching work. It becomes defective. Then, the die is taken out from the punching die, and as shown in FIG.
The punched and cut surface of the die is ground to remove the worn portion m so as to be in a sharp state so that a good cut surface can be obtained again.

[0003]

By grinding the punching and cutting surface of the die, it is possible to punch the small card printed portion of the sheet and finish the cut small card. However, the surface of the die-cutting die is lowered only by the ground portion. Even if the amount by which the surface falls is a minute amount Δd (see FIG. 16), when the sheet is fed from the sheet feeding section to the punching die in such a state, the sheet reaching the die surface is reached. The leaf sheet is lowered by the ground portion (the minute amount Δd), and the small card printing portions p printed in plural on the sheet S cannot match the position of the punching hole of the die.
Therefore, as shown in FIG. 17, the small card printing unit p
Therefore, punching and cutting will occur with a slight deviation Δs in the horizontal direction. Then, when a small card is manufactured from a single sheet by pressing a punch with the die, as shown in FIG. 18, the small amount Δs from the small card forming planned position where the small card printing section p is described. It will be in a shifted state,
There has been a problem that a small card group cannot be accurately manufactured from a single sheet.

[0004]

Therefore, as a result of intensive studies by the inventor to solve the above-mentioned problems, the present invention was found to be a die for punching single-wafer sheets equipped with a die and a punch, and a die for punching. The sheet feeding device for feeding the sheet to the die has a sheet feeding part capable of moving up and down, and the sheet feeding reference line of the sheet feeding part is set. By using a sheet-fed sheet punching machine capable of adjusting the height so as to be flush with the surface of the die, even after grinding the die-cutting surface of the die of the die for punching, The above problem can be solved by accurately punching and cutting the small card printed portion from the leaf sheet.

[0005]

Operation: First, the punching hole 1 of the die 1 of the punching die A.
a gradually wears out as it is used for a long time, and the sharpness for making small cards s, s, ... Punching and cutting a plurality of small card printing parts p, p ,. 15 (a) and 15 (b)]. Therefore, the die 1 is removed from the punching die A, and the die 1 is removed until the worn portion m of the punched hole 1a in which the punching cutting is deteriorated disappears.
The punching and cutting surface of is ground [see FIG. 15 (c)]. In this state, the die 1 is returned and fixed to a predetermined position of the bolster 3 of the punching die A. At this time, if the grinding amount of the die 1 is Δd, the sheet feeding unit B _{1 of the} sheet feeding device B ₁ When the die 1 is in a state before being ground, the sheet S draws a gentle circular arc by the ground amount Δd while reaching the surface of the die 1 of the die A for punching from the sheet feeding part B _1. (See FIG. 16).

Therefore, even if the sheet S is fed from the sheet feed section B ₁ by an accurate feed amount and stopped, the position of punch cutting between the die 1 and the punch 2 of the punching die A. Means that a small amount Δs is deviated. Therefore, even if the punch 2 is lowered onto the die 1 of the punching die A as it is, the small card printing portions p, p, ... Of the sheet S cannot be accurately punched and cut, and are separated from the printing portion. The small cards s, s, ... will be manufactured (see FIGS. 17 and 18).

Therefore, the sheet feeding section B ₁ of the sheet feeding apparatus B is lowered by the amount Δd of grinding the punched and cut surface of the die 1 [see FIGS. 9 (a) and 9 (b)].
That is, the sheet-feeding reference line L in the horizontal direction, in which the sheet-feeding sheet B is fed out in the direction of the punching die A by the sheet-feeding section B _1, is the same as the punched-cut surface of the die 1 after grinding. (See FIG. 10). Thereby, the sheet A is punched from the sheet feeding apparatus B by the die A.
, And the small card printing parts p, p, ... From the sheet S in the punching die A exactly match the punching holes 1a of the die 1, and the small card printing parts p, p ,. Accurately punch and cut with a punch 2 to obtain good quality small cards,
, can be manufactured (see FIG. 11).

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the apparatus of the present invention, as shown in FIG. 1, a plurality of small cards s, s are formed from a sheet S (raw sheet). .. is manufactured by a punching die A and a sheet feeding apparatus B. As shown in FIGS. 2 and 3, the punching die A is composed of a die 1 and a punch 2, and is manufactured by punching a plurality of small cards s, s, ... , The punch 2 moves in the vertical direction so that the punch 2 bites into the sheet S existing on the die 1, and punching is performed so that the small cards s, s, ... Are cut from the sheet S. It is manufactured by

As shown in FIGS. 2 and 3, etc., the die 1 has a punching hole 1a at a portion where the punch 2 bites, and the punch 2 bites into the die 1 and a plurality of small cards from the sheet S. are formed [FIG. 15 (a)]
reference〕. Also, although not particularly shown, small cards s, s, ...
May have a structure in which the die 1 is dropped below the punched hole 1a and can be appropriately bundled.
A small card carrier is provided below the die 1 so that the small cards s, s, ... Punched from the punching die A can be easily carried to the next process section.

As shown in FIG. 1, the single-sheet feeding device B is provided with a single-sheet feeding part B ₁ , and in the single-sheet feeding part B ₁ , the feeding roller 10 and the feeding table 11 are connected. It is configured. The feed roller 10 of the sheet feeding unit B ₁ is composed of a lower roll 10a and an upper roll 10b (see FIGS. 2 and 3). The lower roll 10a and the upper roll 10b feed the sheet S in the direction of the punching die A while sandwiching the sheet S, and a horizontal line in which the sheet S is fed horizontally. Is the sheet feeding reference line L.

The upper roll 10b of the feed roller 10
Can move up and down with a slight stroke relative to the lower roll 10a, and when the sheet S enters between the lower roll 10a and the upper roll 10b, the upper roll 10b
Rises and the feed roller 10 operates to feed the sheet S into the die A for punching, the upper roll 10b approaches the lower roll 10a, and the sheet S falls below the roll 1.
0a and the upper roll 10b are sandwiched and rotated in opposite directions to transport the sheet S.

The sheet feeding section B ₁ is provided with a feed roller 10 and a feed table 11 as well as a sheet feeding conveyor 12 for the sheet S (see FIG. 1). Then, the sheet S is fed from the sheet feeding section C one by one toward the sheet feeding section B ₁ of the sheet feeding apparatus B, and the feeding conveyor 12, the feeding table 11 and the feeding roller 10 are fed. Die A for punching sheet S in order
To send to the part.

The single-sheet feeding section B ₁ is constructed so that it can be raised and lowered, and there are various examples of the raising and lowering structure. The first embodiment will be described. On the fixed support base 14, the elevating base 1 of the single-wafer sheet feeding section B ₁ is provided.
3 are provided, and the guide posts 1 are provided at the four corners of the elevating base 13.
5, 15, ... Are provided (see FIGS. 4 to 6). Then, it is possible to prevent the single-wafer sheet feeding portion B ₁ from moving up and down in accordance with the guide posts 15, 15, ... Further, the fixed support base 14 is provided with a screw rod 16 and a driving means 17 for rotationally driving the screw rod 16. The screw rod 16 is provided vertically to the fixed support base 14, and the bearing portion 19 is provided so as to rotate in a stable state in the axial circumferential direction.
Supported by.

Further, an elevating body 18 is provided on the screw rod 16 while being screwed therein, and the elevating body 18 can be raised and lowered as the screw rod 16 rotates in the axial direction. The elevating body 18 has a driven screw portion 18a on which a support frame 18b is formed, and the elevating base 13 is provided on the support frame 18b (see FIG. 5). A plurality of screw rods 16 are provided, and two screw rods 16 are provided in the embodiment shown in the drawing (in the embodiment, they are provided at both ends of the elevating base 13). The screw rods 16 and 16 are simultaneously rotated at a constant speed, and the elevating bodies 18 and 18 provided on the screw rods 16 and 16 can be moved up and down at the same speed. Further, as another embodiment, there is an embodiment in which a lifting cylinder 20 is provided below the sheet feeding unit B ₁ so that the height can be appropriately adjusted by the lifting cylinder 20.

Next, the die 1 of the punching die A is fixed to the bolster 3. Punching hole 1 of the die 1
When the surface part of a is worn and deteriorated by punching and cutting, it is repaired and removed by grinding, and then the die 1 is again used.
The bolster 3 is provided with a positioning shaft 4 for mounting the bolster 3 at the first accurate position when the bolster 3 is mounted (see FIG. 12). The positioning shaft 4 is configured to project and retract from the bolster 3, and specifically, the drive cylinder 5 performs the above operation. The tip of the positioning shaft 4 has a substantially conical shape, and the head has a slightly flat shape. Such a positioning shaft 4 is attached to the bolster 3.
It is provided in some places.

Further, a push-up protrusion 6 is provided near the positioning shaft 4 so as to be retractable into the bolster 3. An elastic body such as a coil spring is incorporated inside the push-up protrusion 6 so as to elastically protrude from the surface of the bolster 3. Further, the positioning shaft 4 is provided on the lower surface side of the die 1.
Positioning holes 1b, 1b into which the head of the device can be inserted are formed. First, with the die 1 removed from the bolster 3,
The push-up protrusion 6 projects from the bolster 3. When the die 1 whose surface has been ground is placed on the bolster 3, the die 1 is inserted into the positioning holes 1b, 1b of the die 1, and the die 1 is pressed against the surface of the bolster 3 as it is. At this time, the die 1 is pressed against the bolster 3, and the positioning shaft 4 sinks due to the surface of the bolster 3, and finally the fluid of the drive cylinder 5 that operates the positioning shaft 4 is drained (see FIG. 13).

As described above, when the positioning hole 1b of the die 1 and the positioning shaft 4 of the bolster 3 are tapered in a conical shape, when the die 1 is placed on the bolster 3, the dice is attached to the tip of the positioning shaft 4. By inserting the positioning hole 1b of No. 1 and lowering the die 1 as it is, the center line of the die 1 and the center line of the positioning shaft 4 of the bolster 3 are automatically aligned [FIGS. 14 (a) and (b). )reference〕. Further, the die 1 has a press lock mechanism 21 installed on the bolster 3.
It is fixed by (see FIGS. 12 and 13). The press lock mechanism 21 is driven by a hydraulic cylinder or the like.

[0018]

According to the first aspect of the present invention, there is provided a die A for punching a sheet having a die 1 and a punch 2, and a sheet feeding device B for feeding the sheet S to the die A for punching. The single-sheet sheet feeding device B has a single-sheet sheet feeding section B ₁ which can be moved up and down, and the single-sheet sheet feeding reference line L of the single-sheet sheet feeding section B ₁ with respect to the surface of the die 1. By using the sheet-fed sheet punching machine whose height can be adjusted so as to be on the same plane, first of all, the sheet-fed sheet is also cut after the die 1 of the die A for punching is satisfactorily cut. It is possible to prevent deviation of the small card cutting portion of the sheet S, and secondly, it is possible to extremely accurately manufacture the small card from the sheet S.

The above effects will be described in detail. In the die A for punching a single sheet having the die 1 and the punch 2, and the single sheet feeder B for feeding the single sheet S into the die A for punching, The sheet feeding line of the sheet feeding unit B ₁ is arranged to be on the same surface as the surface of the die 1, and the same surface is always maintained on the same surface including the one after completion of die grinding. The small card s from the sheet S can be manufactured very accurately.

Next, in a second aspect, the single sheet feeding section B of the single sheet feeding device B in the first aspect.
₁ is a sheet-fed sheet punching / manufacturing machine provided with an elevating means 17 capable of moving up and down, so that the sheet-fed sheet feeding section B ₁ is appropriately adjusted according to the grinding surface of the die 1 of the punching die A. By moving it up and down, the worker can work extremely easily and efficiently.

Next, in claim 3, in the sheet feeding device B according to claim 1, the sheet feed device B is provided with a screw rod 16 which is rotatable in an axial direction, and a drive means 17 which rotationally drives the screw rod 16. The screw rod 16 is provided with an elevating body 18 that moves up and down with rotation, and the elevating body 18 is appropriately connected to the sheet feeding section B ₁ to provide a sheet-fed sheet punching machine for repairing. It is possible to accurately and efficiently correspond to the die 1 whose surface has been ground.

That is, since the lifting / lowering body 18 is lifted / lowered by the screw rods 16, 16, ...
The single-sheet feeding unit B ₁ connected to the elevating body 18 can accurately perform the elevating operation. Therefore, in order to eliminate the worn portion m of the punching hole 1a in which the punching and cutting ability of the die 1 is deteriorated, after the punching and cutting surface of the die 1 is ground, the surface of the die 1 and the sheet feeding portion B ₁ ( In order to match the surface of the feeding table 11), the single-sheet feeding unit B ₁ can be easily moved up and down, and the position of the _single- sheet feeding unit B ₁ can be set accurately. .

[Brief description of drawings]

FIG. 1 is a schematic side view of the present invention.

FIG. 2 is a perspective view showing a die, a feed roller, and a feed table.

FIG. 3 is a schematic side view showing a die, a feed roller, and a feed table.

FIG. 4 is a side view of the sheet feeding device.

FIG. 5 is a front view of the sheet feeding apparatus.

FIG. 6 is a schematic perspective view of a sheet feeding apparatus.

FIG. 7 is a schematic view of another embodiment of the present invention.

FIG. 8 is a schematic diagram showing the configuration of the present invention.

FIG. 9A is an enlarged schematic view of an essential part before grinding the die. FIG. 9B is an enlarged schematic view of an essential part after the die is ground.

FIG. 10 is a schematic side view showing a state where the small card printing portion of the sheet is aligned with the punching hole of the die.

FIG. 11 is a schematic plan view showing a state where the small card printing portion of the sheet is aligned with the punching hole of the die.

FIG. 12 is a schematic view showing a structure for accurately mounting a die on a predetermined position of a bolster.

FIG. 13 is a schematic view showing a state in which a die is accurately attached to a predetermined position of a bolster.

FIG. 14 (a) is an enlarged schematic view showing a state where a bolster positioning shaft is started to be inserted into a die positioning hole, and FIG. 14 (b) is an accurate position by inserting the bolster positioning shaft into a die positioning hole. Enlarged schematic diagram showing the settings

15 (a) to 15 (c) are schematic views showing a state in which the punching holes of the die are worn away.

FIG. 16 is an enlarged schematic view showing a state where a step is formed between the sheet feeding unit and the die surface.

FIG. 17 is an enlarged schematic view showing a state in which the small card printing unit of the sheet cannot accurately match the punching hole due to a step between the sheet feeding unit and the die surface.

FIG. 18 is a plan view showing a state in which the small card printing unit of the sheet is manufactured with a shift.

[Explanation of symbols]

A ... Die for punching 1 ... Die 2 ... Punch B ... Single sheet feeding device B ₁ ... Single sheet feeding unit S ... Single sheet s ... Small card L ... Single sheet feeding reference line 16 ... Screw rod 18 ... Lifting body

(72) Inventor Akira Uchiyama 1725 Toho-cho, Midori-ku, Yokohama-shi, Kanagawa Prefecture Eastern Giken Co., Ltd. (72) Masahiko Kasai, 1725, Toho-cho, Midori-ku, Yokohama-shi Kanagawa Prefecture

Claims (3)

[Claims] 1. A sheet-fed sheet punching die equipped with a die and a punch, and a sheet-fed sheet feeder for feeding the sheet-fed sheet to the punching die, which can be moved up and down. A single-wafer sheet having a single-sheet feeding unit, and the height of the single-sheet feeding unit can be adjusted such that a single-sheet feeding reference line of the single-sheet feeding unit is flush with the surface of the die. Punching machine. 2. The sheet-fed sheet punching machine according to claim 1, wherein the sheet-fed sheet feeding section of the sheet-fed sheet feeding device is provided with an elevating means capable of moving up and down. 3. The sheet feeding device according to claim 1, wherein the single sheet feeding device is provided with a screw rod rotatable in the axial direction and a drive means for rotating the screw rod, and the screw rod is vertically moved with rotation. A sheet-fed sheet punching / manufacturing machine comprising a body, and the elevating body is appropriately connected to a sheet-feeding section.